McCall's 5579 vintage sewing pattern, dated 1977.

Misses' Top, Skirt and Pants or Shorts for Unbonded Stretchable Knits:

Pullover top has extended shoulder line, cowl collar and drawstring in lower casing; long sleeves A, B have elastic in wrist casings. Pull-on skirt, pants or shorts have elastic in waistline casing. Skirt is cut bias. 

Size   SMALL 10 - 12:

Bust   32 1/2 - 34 inches / 83 - 87 cm

Waist 25 - 26 1/2 inches / 64 - 67 cm

Hip    34 1/2 - 36 inches / 88 - 92 cm

Pattern is partly cut and checked complete. Envelope is in good vintage condition, with some wear around opening.

More '70s patterns here:

http://allthepreciousthings.com/collections/1970s